This man's presidency gained control of key waterways under the Montreux Convention. The Sun Language Theory, which proposed one language produced all others, was developed during this man's presidency. This world leader invited John Dewey to his country to prepare a report on educational reform. During his presidency, a lieutenant was beheaded by fanatics at Menemen. His country's independence was recognized with the Treaty of Lausanne in 1923. This leader's Six Arrows included republicanism and secularism, which saw him promote  modern dress for women and Western-style hats instead of the fez in trying to move his country beyond the policies of the Ottoman Empire. For 10 points, name this 
This man's presidency gained control of key waterways under the Montreux Convention. The Sun Language Theory, which proposed one language produced all others, was developed during this man's presidency. This world leader invited John Dewey to his country to prepare a report on educational reform. During his presidency, a lieutenant was beheaded by fanatics at Menemen. His country's independence was recognized with the Treaty of Lausanne in 1923. This leader's Six Arrows included republicanism and secularism, which saw him promote  modern dress for women and Western-style hats instead of the fez in trying to move his country beyond the policies of the Ottoman Empire. For 10 points, name this first president of the Republic of Turkey.
This man's presidency gained control of key waterways under the Montreux Convention.
{Mustafa Kemal Ataturk} [accept either]